<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>统计字符个数</title>
</head>

<body>
    <script>
        const str = `assddggc`
        let result = {}
        for (let i = 0; i < str.length; i++) {
            if (result[str[i]]) {
                result[str[i]]++
            } else {
                result[str[i]] = 1
            }
        }
        console.log(result)   
    </script>
</body>

</html>